f all in the package was so > little bit of sponge tape that it never held the camera, I bought some > more, but still the tripod mount is unusable.
If you don't mind me asking, how much did your camera cost? Going by past experience, I suspect it's not cheap. I've often found cyan tingeing a problem with Polaroid film. As for brass shim, I've used ordinary tin foil and had excellent results. Cheaper than brass and in keeping with the spirit of pinhole improv! Regards, Mark in the UK